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RESEARCH PAPERS

The Viscoplastic Bending of Copper-Nickel and Steel Tubing

[+] Author and Article Information
T. M. Frick

CRBRP Structural Analysis Group, Westinghouse Electric Corp., Advanced Reactors Division, Waltz Mills, Pa.

V. H. Neubert

Pennsylvania State University, University Park, Pa.

J. Eng. Mater. Technol 99(4), 387-392 (Oct 01, 1977) (6 pages) doi:10.1115/1.3443556 History: Received August 19, 1976; Revised July 11, 1977; Online August 17, 2010

Abstract

Experimental data for dynamically loaded viscoplastic beams with a tubular cross section where elastic strains are a significant part of the total strain are obtained for two materials, 1020 steel and 70/30 copper-nickel alloy. Maximum strain rates are 0.78 and 1.89 s−1 , respectively. This work defines a successful experimental approach for obtaining dynamic data and provides results which can be used in defining failure for optimal design. A moment-curvature constitutive relation, including rate effects, is fitted to the data.

Copyright © 1977 by ASME
Topics: Steel , Tubing , Copper , Nickel , Alloys , Design , Failure
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